Book Image

Monitoring Docker

By : Russ McKendrick
Book Image

Monitoring Docker

By: Russ McKendrick

Overview of this book

This book will show you how monitoring containers and keeping a keen eye on the working of applications helps improve the overall performance of the applications that run on Docker. With the increased adoption of Docker containers, the need to monitor which containers are running, what resources they are consuming, and how these factors affect the overall performance of the system has become the need of the moment. This book covers monitoring containers using Docker's native monitoring functions, various plugins, as well as third-party tools that help in monitoring. Well start with how to obtain detailed stats for active containers, resources consumed, and container behavior. We also show you how to use these stats to improve the overall performance of the system. Next, you will learn how to use SysDig to both view your containers performance metrics in real time and record sessions to query later. By the end of this book, you will have a complete knowledge of how to implement monitoring for your containerized applications and make the most of the metrics you are collecting
Table of Contents (15 chapters)
Monitoring Docker
About the Author
About the Reviewer

Halting the virtual server

To log out of the virtual server and return to your local machine, you type exit.

You should now see your local machine's terminal prompt; however, the virtual server you booted will still be running in the background happily, using resources, until you either power it down using the following command:

vagrant halt

Terminate the virtual server altogether using vagrant destroy:

vagrant destroy

To check the current status of the virtual server, you can run the following command:

vagrant status

The result of the preceding command is given in the following output:

Either powering the virtual server back on or creating it from scratch again, can be achieved by issuing the vagrant up command again.

The preceding details show how to use the CentOS 7 vagrant box. If you would prefer to launch an Ubuntu 14.04 virtual server, you can download and install the vagrant box by going into the vagrant-ubuntu directory using the following command:

cd ~/Documents/Projects/monitoring-docker/vagrant-ubuntu
vagrant up

From here, you will be able run vagrant up and follow the same instructions used to boot and interact with the CentOS 7 virtual server.